This volume examines key aspects of international economic theory and policy. Six papers deal with money and exchange rates. They discuss historical evidence on free banking, the question whether speculation in foreign exchange markets is stabilizing or destabilizing, the insulation properties of flexible exchange rates, the economics of the Louvre Accord, some basic issues of the German Monetary Union and the merits offinancial liberalization in developing countries. Five papers deal with international trade. They focus on the integration of fiscal policy into thetheory of international trade, theoretical aspects of international factor flows, the relation between trade restrictions and exchange rates, the recent shift of the United States trade policy toward agressive unilateralism and the theory and practice of commercial policies since 1945. Of the remaining two papers, one discusses basic concepts of welfare economies while the other reassesses the vital link between competition and economic growth. The contributors include internationally renowned scholars. The volume is dedicated to the memory of Egon Sohmen, who was one of the prominent early advocates of flexible exchange rates.